Orientador: David Dequech Filho / Tese (doutorado) - Universidade Estadual de Campinas, Instituto de Economia / Made available in DSpace on 2018-08-16T17:36:01Z (GMT). No. of bitstreams: 1 Santos_AndreLuisMotados_D.pdf: 1503863 bytes, checksum: 3e0350221d980ad77c5ba5b368aaba80 (MD5) Previous issue date: 2010 / Resumo: Esta tese examina a compatibilidade do sistema de metas de inflação com uma estrutura econômica que é caracterizada como pós-keynesiana. Essa estrutura é formada por três elementos: uma relação IS; uma relação como a curva de Phillips, mas com teor pós-keynesiano; e um processo adaptativo de formação de expectativas para a taxa de inflação. Políticas monetária e de rendas reagem ao desvio da inflação em relação a uma meta de inflação e/ou ao desvio do produto em relação a uma meta para o produto. Essas funções de reação para as políticas monetária e de rendas fecham o sistema, e diferentes funções de reação conformam diferentes sistemas dinâmicos. Expectativas dependem das taxas de inflação passadas e da taxa meta de inflação: elas são adaptadas em cada período tomando-se a discrepância entre o valor da inflação esperado e a média ponderada entre inflação observada e meta de inflação. A depender de qual desvio ou quais desvios compõem cada função de reação, a combinação de políticas pode ser classificada como pós-keynesiana, ortodoxa ou mesmo como contendo elementos de ambas as orientações. Uma combinação de funções de reação capaz de gerar convergência dos desvios do produto e da inflação em relação às respectivas metas de maneira que cada política seja independente uma da outra tem algum grau de compatibilidade com a estrutura da economia. A capacidade de convergência de cada sistema mede o grau de compatibilidade das políticas com a estrutura da economia. Para alcançar metas para produto e inflação, a maioria dos modelos mostra que a política de rendas deve reagir, no mínimo, ao desvio da inflação, enquanto a política monetária deve pelo menos reagir ao desvio do produto. Um caráter convencional ou institucional surge quando há sucesso do sistema de metas de inflação, o que garante aderência da confiança ao processo de formação de expectativas. / Abstract: This dissertation analyses the compatibility of the inflation target system with an economic structure characterized as a post Keynesian one. This structure presents three elements: an IS relation; a relation similar to the Phillips curve but with a post Keynesian content; and an adaptive process of the formation of expectations for the inflation rate. Monetary and incomes policies react to the inflation gap in relation to an inflation target and/or to the output gap in relation to a product target. These reaction functions to monetary and incomes policies close the system and different reaction functions structure different dynamic systems. Expectations depend on past inflation rates and on the inflation target rate: they are adapted in each period, considering the gap between the expected inflation value and the weighted average between the actual inflation and the inflation target. Depending on the gap or gaps that make up each reaction function, the combination of policies can be classified as post Keynesian, orthodox or as a mix of elements from both orientations. A combination of reaction functions capable of generating a convergence of the product and the inflation gaps in relation to the respective targets, in such a way that each policy remains independent from the other, has some degree of compatibility with the structure of the economy. The convergence capacity of each system gauges the compatibility degree between the policies and the structure of the economy. To reach product and inflation targets most models show that the incomes policy must at least react to the inflation gap, whilst the monetary policy must at least react to the product gap. A conventional or institutional character emerges when the inflation targets system succeeds. This guarantees the maintenance of confidence in the process of expectations formation. / Doutorado / Teoria Economica / Doutor em Ciências Econômicas

Orientador: Antonio Carlos Macedo e Silva / Dissertação (mestrado) - Universidade Estadual de Campinas, Instituto de Economia / Made available in DSpace on 2018-08-16T01:23:30Z (GMT). No. of bitstreams: 1 Giannella_Andrea_M.pdf: 1109618 bytes, checksum: 700c4b7467685ccd3fe8aa918a8324e0 (MD5) Previous issue date: 2010 / Resumo: John M. Keynes e Dennis H. Robertson, ambos economistas de Cambridge, foram intensos colaboradores intelectuais na década de 1920; mas após da publicação da Teoria geral de Keynes, em 1936, a colaboração foi substituída por uma ostensiva rivalidade teórica. O ponto de inflexão do relacionamento entre ambos, entretanto, antecede esta época, e remonta à publicação do Tratado sobre a moeda de Keynes, em 1930. A partir da resenha que Robertson fez deste livro, os autores travaram um debate teórico e terminológico, acerca de questões como a determinação do preço dos bens de investimento, a relação entre poupança, investimento e entesouramento, e a determinação da quantidade de depósitos inativos na economia. Este debate, denominado pela literatura especializada de controvérsia "dos baldes em um poço", foi considerado de importância fundamental para as futuras divergências entre os autores, mas não recebeu atenção analítica à altura desta consideração. Nesta dissertação, argumenta-se que o desdobramento dos pontos debatidos esteve em parte relacionado à necessidade de Keynes de responder às críticas de Hayek ao livro, e procura-se estabelecer um modo de correlação entre os diversos conceitos debatidos (entesouramento, depósitos inativos, nível de preço dos bens de investimento, poupança, etc.) Considerou-se, como ponto de orientação geral, a pergunta: a controvérsia foi teórica ou simplesmente terminológica? O que se constata é que não há resposta simples para esta questão. De fato, a "controvérsia dos baldes em um poço" mistura assuntos teóricos, talvez não inteiramente compatíveis entre si, e em relação aos quais a diferença entre os autores foi em parte teórica, e em parte terminológica / Abstract: John M. Keynes and Dennis H. Robertson, both economists from Cambridge, were intense intellectual collaborators in the 1920s; but after the publication of Keynes?s General theory, in 1936, their collaboration was substitutes by an ostensive theoretical rivalry. The turning point of their relationship, however, is previous from that time, and goes back to the publication of Keynes's Treatise on money, in 1930. From Robertson's review of that book on, the authors engaged in a theoretical and terminological debate, concerning matters such as the determination of the price of investment goods, the relation between saving, investment and hoarding, and the determination of the quantity of inactive deposits in the economy. This debate, named the "buckets in a well" controversy by the specialized literature, was considered to be of fundamental importance for the future divergence between the authors, but did not receive an analytical attention compatible to such consideration. In this dissertation, it is argued that the unfolding of the subjects in the debated was partially related to Keynes's need to answer Hayek's critics of his book, and the dissertation means to establish a way to correlate the many debated concepts (hoarding, inactive deposits, price level of investment goods, saving, etc.) It was considered, as a general point of orientation, the question: was the controversy theoretical, or simply terminological? It is concluded that there is no simple answer to such question. As a matter of a fact, the "buckets in a well controversy" mixes many theoretical subjects, which may not be entirely compatible one to another, and in relation to which the difference between the authors was partially theoretical, and partially terminological / Mestrado / Historia Economica / Mestre em Ciências Econômicas

De acordo com León-Ledesma and Thirlwall (2002), o presente trabalho se propõe a testar a endogeneidade da taxa natural de crescimento para um conjunto amplo de países, no sentido do crescimento de longo prazo ser determinado pela demanda. Econometricamente, a principal hipótese a ser testada é a presença de não linearidade na Lei de Okun, que implica na existência de duas taxas naturais, cada uma correspondendo a um regime de crescimento. Utilizando dados anuais para o período de 1980 a 2007 e dados trimestrais para o intervalo entre 1980 e 2011, os resultados corroboram a hipótese de endogeneidade quando aplicada a metodologia proposta por LLT. Esta evidência se repete ao definir exogenamente os regimes de crescimento pelos métodos de Markov-Switching e threshold autoregressive regression (TAR) para os dados anuais, no entanto, para os dados trimestrais há indicações de endogeneidade e exogeneidade da taxa natural de crescimento. / Following León-Ledesma and Thirlwall (2002), this master\'s thesis aims to examine the sensitivity of the natural growth rate to the actual growth rate for a broad set of countries, based on demand-led growth theory. The main hypothesis being tested is the presence of non-linearities in Okun\'s Law, which means the existence of two natural growth rates, each corresponding to a growth regime. Using annual data over the period 1980-2007 and quarterly data over the period 1980-2011, the results support the idea that natural growth rate is dependent of the actual growth rate when applying LLT\'s methodology. This evidence repeats when establishing exogenously the regimes of growth by using Markov-Switching and threshold autoregressive regression (TAR) for the annual data, however for quarterly data this is less straightforward, having indication of endogenous and exogenous natural growth rate.

Os principais modelos de equilíbrio parcial e DSGE que estudam a dinâmica do investimento desconsideram questões centrais para a pesquisa desse tema e tem dificuldades em explicar resultados da literatura empírica. Defendemos que estudar a dinâmica do investimento como um sistema adaptativo complexo por meio de modelos de simulação baseados em agentes (ABMs) é uma alternativa promissora. Nessa dissertação motivamos, descrevemos, justificamos metodologicamente e construímos um ABM nos inspirando em modelos importantes da literatura e incorporamos às expectativas de demanda das firmas uma regra de revisão de otimismo e um mecanismo de interação em suas decisões de produção e investimento. Com isso, reproduzimos diversos fatos estilizados da literatura empírica e conseguimos testar os efeitos macroeconômicos de hipóteses teóricas relacionadas a fenômenos de contágio via confiança, motivações políticas e à reflexividade, presentes nas decisões das firmas. Nossos resultados colocam em dúvida a efetividade de mecanismos análogos à greve de investimentos, como meios dos empresários controlarem as políticas dos governos, mas confirmam que endogeneizar possíveis motivações políticas, ainda que subjetivas, no nível de confiança das firmas tem efeitos macroeconômicos substanciais. Ademais, nossos experimentos sugerem que i) tanto a evolução da produtividade, quanto dos salários reais são condições necessárias para o crescimento, ii) choques de confiança temporários tem efeitos de longo-prazo, iii) para que choques de pessimismo localizados contagiem a economia, eles precisam ser persistentes, iv) considerar o conceito de reflexividade tem consequências macroeconômicas importantes. Não encontramos evidências de que contrações fiscais do governo possam ser expansionistas, por meio de seus efeitos na confiança. / The main parcial equilibrium and DSGE models which study investment dynamics disregard core issues about this subject and have problems to explain results coming from the empirical literature. We argue that studying investment dynamics in a complex adaptive system by using Agent-Based Models is a promising alternative. In this work we motivate, describe, justify methodologically and build an ABM in line with important models from the literature and we incorporate to firms\' demand expectations an optimism revision rule and an interaction mechanism in their decisions to produce and invest. Thereby, we replicate many stylized facts from the empirical literature and we were able to test macroeconomic effects from theoretical hypothesis related to confidence-driven contagion phenomena, political motivation and reflexivity, present in firms\' decisions. Our results question the effectiveness of mechanisms analogous to the investment strikes, as a way for businessmen to control government policies, but confirm that endogenize possible political motivations, yet subjective, in the level of confidence of the firms has substantial macroeconomic effects. Furthermore, our experiments suggest that i) both productivity and real wages are necessary conditions for growth, ii) temporary confidence shocks have long-term effect, iii ) for localized shocks of pessimism, to contagion the economy, they need to be persistent, iv) consider the concept of reflexivity has important macroeconomic consequences. We find no evidence that government fiscal contractions can be expansionist, through their effects on confidence levels.

Orientador: Antonio Carlos Macedo e Silva / Dissertação (mestrado) - Universidade Estadual de Campinas, Instituto de Economia / Made available in DSpace on 2018-08-20T05:46:58Z (GMT). No. of bitstreams: 1 Souza_LeonardoFlauzinode_M.pdf: 1156212 bytes, checksum: 680a27401a91a86efbf66d613a7ad412 (MD5) Previous issue date: 2012 / Resumo: A crise econômica de 2008 pode ser analisada pelo arcabouço das teorias keynesianas, em especial a partir das interpretações em torno da teoria da preferência pela liquidez. Esta foi elaborada primeiramente na Teoria Geral de Keynes, mas alcançou interpretações muito diversas nas obras de Kaldor, Hicks, Davidson e Minsky. As idéias expostas por estes autores são capazes de fornecer algumas explicações sobre as escolhas de ativos, em especial os relacionados aos mercados financeiros, e analisar os impactos dinâmicos das decisões de financiamento e alocação do capital. Entretanto, algumas inovações financeiras, como a securitização e os derivativos, que tiveram uma participação fundamental na constituição da crise, não são, de forma geral, exploradas por estes autores. Desta forma, o presente trabalho se propõe a explorar a teoria e as interpretações supracitadas, a fim de construir uma analise teórica da crise de 2008, abarcando as contribuições das inovações financeiras mencionadas. O contexto histórico em torno da crise de 2008, analisado pelo viés teórico keynesiano, é capaz de explicar como esta tomou a forma de uma das mais severas crises da história do capitalismo contemporâneo. Ao se iniciar como uma crise de crédito convencional e aos poucos tomar a forma de uma crise de liquidez e solvência, destaca-se o papel crucial da securitização de créditos e dos derivativos financeiros neste processo, alterando as escolhas de portfólio, as decisões de financiamento e a dinâmica das interações entre os balanços das diversas instituições financeiras da economia norte-americana e mundial / Abstract: The 2008 economic crisis can be analyzed by the framework of post-Keynesian theories, especially the interpretations around the liquidity preference theory. This one was first presented in Keynes' General Theory, but it reached very different interpretations in the work of Kaldor, Hicks, Davidson and Minsky. The ideas put forward by these authors can provide some explanations about the asset choices, particularly those related to financial markets, and analyze the dynamic impact of finance decisions and capital allocation. However, some financial innovations, such as securitization and derivatives, which had a seminal role in the constitution of the crisis, are not generally exploited by these authors. Thus, this study aims to explore the theory and the interpretations above, in order to build a theoretical analysis of the 2008 economic crisis, covering the contributions of the financial innovations mentioned. The historical context surrounding the 2008 economic crisis, analyzed by the bias of Keynesian theory, is able to explain how that took the form of one of the most severe crises in the history of contemporary capitalism. When it start as a conventional credit crisis and gradually take the form of a crisis of liquidity and solvency, it highlight the crucial role of securitization of loans and financial derivatives in this process, changing the portfolio choices, funding decisions and the dynamics of interactions between the balance sheets of many financial institutions in the U.S. economy and the world / Mestrado / Ciências Economicas / Mestre em Ciências Econômicas

Hyman Minsky’s Financial Instability Hypothesis is used to construct two different indices for financial instability: a long-term index (Long Term Financial Instability) and a short-term index (Short Term Financial Instability). The former focuses on the underlying fragility of financial structures of units in the economy while the latter focuses on more immediate developments and manages to follow turmoil – “a financial crisis” – in the economy. The interplay of the indices with each other, with economic growth and with Foreign Direct Investment, both in general and in the financial industry, is probed. In short, we find that long term financial stability, i.e. secure financial structures in the economy or a low level of Long Term Financial Instability, is sacrificed for maintaining short term financial stability. However, more Long Term Financial Instability is associated, as Minsky expected, with more fluctuations in Short Term Financial Instability: market turmoil is more common the more fragile underlying financial structures of units in the economy are. This signals that markets are ruled by short-termism. Economic growth is harmed by Short Term Financial Instability but the effects of Long Term Financial Instability are weaker. The common expectation that FDI activities strengthen financial stability is not confirmed. The relationship found hints rather in the opposite direction: FDI activities seem to cause financial instability. Based on the those investigations and a further empirical work using data from Iceland, Leigh Harkness’s Optimum Exchange Rate System (OERS) is developed further with the intention of solving “The Policy Problem” as described by Minsky. Insights from control theory are used. The OERS, along with public debt management as carried out by Keynes, is argued to have the ability to keep economic activity in the state of a permanent “quasi-boom”. The policy implications are that the OERS should be considered as a monetary policy as it permits a free flow of capital, thereby allowing economies to reap the possible positive benefits of foreign direct investment, while still conserving financial stability.

The purpose of this paper was to evaluate if the macroeconomic change that has occurred in the South African economy since the 1980s has been significant enough to justify a re-examination of the actuaries’ capitalisation rate, due to its formulation processes dependence on the macroeconomic situation. The need for the reexamination arises from the use of the capitalisation in the calculation of lump sum awards where even a small change in the rate can have a significant impact on the value of the final award. In order to address the issue an examination of how Keynesian expectations are formulated and an examination of the Government’s macroeconomic policy was conducted to provide the foundation. On this foundation, a trend analysis of the major groups of financial instruments, as well as the current outlooks for the South African economy, was conducted to determine if there was any indication of a significant change in the macroeconomic conditions. The results of the analysis provided a compelling case for the urgent need for the actuaries’ capitalisation rate to be recalculated to account for the changed economic situation.

After more than 30 years of fast economic development since the Reform and open up to the world in 1978. Chinas socialist market economy is ranked at the worlds second largest economy by nominal GDP. and the worlds largest economy by purchasing power parity according to the IMF today. In spite of the outstanding economic data. China is facing numbers of problems like overcapacity and high financial risk. The goal of this thesis is to dig into the hidden realities behind the fast economic growth of China mainly through analyzing the economic situation after the 2008-09 Chinese economic stimulus plan. which is known asthe 4 trillion RMB (USD 586 billion) stimulus package announced by the State Council of the Peoples Republic of China on 9 November 2008. It is regarded as an attempt to minimize the impact of the global financial crisis on the worlds second largest economy. However. critics of Chinas stimulus package have blamed it for causing a surge in Chinese debt and overcapacity since 2009. particularly among local governments and state-owned enterprises.

A thesis submitted to the Faculty of Commerce, Law and Management, University of the Witwatersrand, Johannesburg, in fullment of the requirements for the Doctor of Philosophy in Economics Degree, June 2017 / This thesis contains three main chapters. The rst chapter employs wageprice spirals to generate ination forecasts for Australia, Canada, France, South Korea, South Africa, United Kingdom and the United States. We use three competing specications of the wage-price spirals, and test which specication provides the best forecasts of price ination. For each specication we provide one quarter, four quarter and eight quarter ahead dynamic forecasts of price ination. The rst two wage-price spirals in the rst chapter are from the Keynesian tradition from te standpoint of expectations formation. The chapter also considers the New Keynesian wage-price spiral. We use the Root Means Square Error and the Clark and West statistic to compare the performance of ination forecasts from the three competing wage-price spirals that we consider in the rst chapter of the thesis. We nd that the New Keynesian wage and price specication su⁄ers from the wrong sign problem, and its forecasts of price ination generally outperform those from the old Keynesian wage price spiral for the eight quarter ahead time horizon. The usefulness of this nding to the conduct of monetary policy is limited due to the wrong sign problem of the forcing variable in the New Keynesian wageprice spiral. We also nd that the Flaschel type specication of price and wage ination produce four and eight quarter head ination forecasts that are better than those from the Fair type specication. We further nd that the Fair type specication price and wage equation produce the best forecasts of ination for the one quarter ahead time horizon. In the second chapter, we estimate natural variables and test their ability to explain the ination process for the eight countries that we consider. We use the traditional Keynesian wage-price spiral and the triangle system approaches to estimate the NAIRU and potential output. In the case of the traditional Keynesian wage-price spiral, the price Phillips curve, which can be specied as a triangle Phillips curve, features backward looking ination expectations and nominal wage ination, the output gap and supply shocks. The nominal wage Phillips curve features ination expectations and price ination and the unemployment gap. The presence of price ination in the nominal wage Phillips curve and the presence of nominal wage ination in the price Phillips curve leads to the interaction between the two Phillips curves. The separate demand pressure terms allows for their identication since, as someauthorsintheliteraturearguethatthegoodsandlabourmarketsdonot move in line with each other. To compute the NAIRU and potential output using the Keynesian approach, we rstly exploit the information contained in vector of unobservable by estimating the wage-price spiral in di⁄erence form using the Seemingly Unrelated Regression method. We use this regression method in order to control for any correlation that may exist between errors in the price and wage Phillips curves. This allows us to solve for the vector of potential output and the NAIRU. We then the moving average technique in order to avoid problems associated with the HP lter for smoothing. Due to data availability, use the MA (20) approximation of the low pass lter after padding the endpoints with forecasts from an AR(4) process. We follow a similar procedure in the estimation of the estimation of the NAIRU and potential output for the triangle system approach. To test which method produces the best natural variables, we t the gaps that are computed from the NAIRU and potential output in a simple single equation price Phillips curve. To test which specication produces the best natural varibles we use a simple single equation triangle price Phillips curve. We nd that the output gaps computed from the two competing approaches are signicantly correlated, the same applies to the unemployment gaps computed from the two approaches. We nd that the quality of unemployment rate gaps computed from the Keynesian and triangle system approach to produce similar quality of results when tted to a single equation triangle price Phillips curve. The Keynesian approach slightly outperforms the triangle systems approach in the when considering the output gap as a proxy for the demand pressure. These results indicate that the wage-price spiral still remains an important tool in the determination of the dynamics ination. In the third chapter, we analyze the relationship between monetary policy and natural variables for Australia, Canada, France, South Korea, South Africa, United Kingdom and the United States. We do this by specifying a relationship between natural rates and the real interest rate. The theoretical relationship between the two variables is positive in the case of the NAIRU and negative through Okuns law in the case of potential output. We regress the natural variable against a constant and the MA(8) of the real interest rate. We nd that the parameter of the real interest rate generally has a correct sign when considering the Keynesian approach computed NAIRUs, with only four being signicant. In the case of the triangle system approach NAIRU, we nd that the real interest rate parameter has a correct sign and signicant four countries. We nd that NAIRUs computed using di⁄erent methodologies can produce a di⁄erent reference point for policy makers. We then introduce hysteresis in the relationship between monetary policy and the NAIRU. We then nd that the interest rate parameter generally has a incorrect sign across the three approaches. The HP ltering approach which we include in our study for comparison purposes produces incorrect correlation for all the countries, while the Keynesian approach negative correlation for seven countries, and the triangle system approach in six countries. In the case of the relationship between monetary policy and potential output, we nd that the real interest rate parameter has an incorrect sign. When introducing hysteresis in the relationship between monetary policy and potential we nd that, unlike in the case of the NAIRU this plays signicant role in the relationship. / XL2018

The phenomenal financial expansion of the last decades has been characterised by an exacerbation of systemic instability and an increase in the frequency of financial crises, culminating in the recent meltdown in the US financial sector. The literature on financial crises has developed concomitantly, but despite a large number of papers written on this subject, economists are still struggling to understand the underlying determinants of these phenomena. In this dissertation, I argue that one of the reasons for this apparent failure is the way agents, as well as the environment in which they evolve, are modelled in this literature. After reviewing the existing literature on international financial crises, I outline an alternative framework, drawing from Post-Keynesian and Behavioural insights. In this framework, international financial crises are seen as being a direct consequence of the way agents formulate expectations in an environment of fundamental uncertainty and the investment and financial decisions they subsequently take. I argue that the psychological heuristics agents use in formulating expectations under fundamental uncertainty can lead to decisions which fragilise the economy and can thus be conducive to financial crises. I then apply this framework to the study of the 2000-2001 financial crisis in Turkey, which is notorious for not lending itself easily to explanations based on the existing theoretical literature on international financial crises. After outlining the crisis and reviewing the main existing accounts, I identify two moments prior to the crisis: A phase of increasing financial fragility, lasting from a previous crisis in 1994 to 1999, and a financial bubble in 2000 during the implementation of an IMF stabilisation program, partly predicated on the previous increase in financial fragility. My framework can account for both periods; it fits particularly well the first one and enhances the explanatory content of existing stories about the events that took place in 2000.